I've flung my spider around the Harris Hill track in this article along with a lot of the Texas Fiat folks. This is truly a great track for a vintage roadster. There is a steep hill down into a "U" shaped turn that then ascends just as fast into a little bit or real estate allowing you to wind up third gear. You will be tempted to shift into fourth and then downshift back to third on a turn they call "Mustang". If you downshift on that turn you WILL end up in the weeds with a huge smile on your face.